4. A blue crystal is placed in water. After much stirring, the crystal disappears and the water
becomes blue. The liquid is then heated.
Eventually, all the water evaporates and
many small blue crystals appear. Has a
chemical reaction taken place? Explain.

Which three statements represent the benefits of performing experiments using computer simulations?

Many free radicals combine to form molecules that do not contain any unpaired electrons. the driving force for the radical–radical combination reaction is the formation of a new electron‑pair bond. consider the chemical equation. n(g)+no(g)⟶nno(g) n(g)+no(g)⟶nno(g) write lewis formulas for the reactant and product species in the chemical equation. include nonbonding electrons. n(g)n(g) select draw rings more erase select draw rings more erase select draw rings more erase n no(g)

Is the idea of spontaneous generation supported by redi's experiment? justify your answer in 2-3 sentences?